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United States Patent | 5,201,472 |
Brock | April 13, 1993 |
A method for treating asphalt roofing shingles to be used for recycling in an asphalt plant which mixes asphalt roofing shingles with between about 15% and 50% by weight of a carrier aggregate. The aggregate is fed into a shredder with the shingles or is otherwise mixed with the comminuted shingles to form a recyclable asphaltic material which may be easily stored and transported, and which may also be used in the preparation of asphalt paving composition.
Inventors: | Brock; J. Don (Chattanooga, TN) |
Assignee: | Astec Industries, Inc. (Chattanooga, TN) |
Appl. No.: | 902759 |
Filed: | June 23, 1992 |
Current U.S. Class: | 241/22; 241/101.8; 366/6 |
Intern'l Class: | B02C 019/00 |
Field of Search: | 241/22,101.8 106/281.1 366/8,18,1,2,6,7,30,9 |
3825192 | Jul., 1974 | Knight | 241/186. |
4210290 | Jul., 1980 | Anderson et al. | 241/30. |
4325641 | Apr., 1982 | Babus et al. | 366/18. |
4339202 | Jul., 1982 | Hart et al. | 366/18. |
4627577 | Dec., 1986 | Hyuga et al. | 241/30. |
4706893 | Nov., 1987 | Brock | 241/23. |